Free WPF obfuscator / protect from reverse engineering? [duplicate]

This question already has answers here: Closed 11 years ago. 开发者_运维百科

Possible Duplicate:

Obfuscator which supports WPF properly

I am looking for a free WPF obfuscator to protect the code inside my application, which includes my API key.

I have seen Dotfuscator but as I understand the free version does not include obfuscating WPF applications.

How should I go about protecting my application from reverse engineering?

Thanks

---

The question has been asked around here several times before. Have a look: https://stackoverflow.com/questions/805549/free-obfuscation-tools-for-net

Anyhow, seems Eazfuscator : http://www.gapotchenko.com/eazfuscator.net is a really good choice.

Update: Eazfuscator.NET will not obfuscate WPF XAML, to my knowledge, however I don't know a free tool that does. A paid version can though; see this http://www.preemptive.com/products/dotfuscator/compare-editions

---

A quick search of Google makes it look like it is not possible to entirely obfuscate a WPF application. You can obfuscate the code behind, but not the XAML.

http://windowsclient.net/blogs/rob_relyea/archive/2009/10/27/obfuscation-of-wpf-applications-status-update.aspx